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Trafica
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First measurement
What the street sounded like
Meaford, Tuesday 22 September 2026, 17:16 to 18:33. Sound level at a 360 camera carried on a walk through town, one reading per second, 4,608 seconds in all. Sound only: emissions are not measured yet.
Table, one row per minute
| Clock | Street | Everything | Peak | Talking |
|---|---|---|---|---|
| 17:16 | -21.9 | -20.4 | -3.4 | 51 s |
| 17:17 | -22.8 | -20.8 | -3.9 | 54 s |
| 17:18 | -24.6 | -21.4 | -4.0 | 57 s |
| 17:19 | — | -19.9 | -4.5 | 60 s |
| 17:20 | — | -19.6 | -3.8 | 60 s |
| 17:21 | -21.4 | -19.2 | -4.1 | 51 s |
| 17:22 | — | -19.1 | -4.2 | 60 s |
| 17:23 | -19.1 | -18.4 | -3.5 | 52 s |
| 17:24 | -21.1 | -19.3 | -1.2 | 49 s |
| 17:25 | — | -18.6 | -4.0 | 60 s |
| 17:26 | — | -18.5 | -3.8 | 60 s |
| 17:27 | -20.0 | -19.4 | -2.5 | 34 s |
| 17:28 | -21.9 | -21.0 | -3.6 | 16 s |
| 17:29 | -19.7 | -19.3 | -2.2 | 21 s |
| 17:30 | -20.3 | -20.3 | -4.9 | 5 s |
| 17:31 | -21.2 | -21.2 | -4.3 | 0 s |
| 17:32 | -20.2 | -19.6 | -3.8 | 57 s |
| 17:33 | -19.7 | -19.8 | -4.2 | 57 s |
| 17:34 | -19.4 | -20.1 | -4.9 | 59 s |
| 17:35 | -20.7 | -20.1 | -4.5 | 57 s |
| 17:36 | -20.0 | -19.8 | -4.4 | 24 s |
| 17:37 | -20.4 | -20.4 | -6.1 | 6 s |
| 17:38 | -19.6 | -19.9 | -4.1 | 23 s |
| 17:39 | -19.3 | -19.2 | -5.3 | 39 s |
| 17:40 | -22.1 | -21.1 | -4.8 | 25 s |
| 17:41 | -23.4 | -23.2 | -6.3 | 9 s |
| 17:42 | -25.4 | -22.7 | -4.5 | 24 s |
| 17:43 | -22.0 | -21.1 | -5.1 | 30 s |
| 17:44 | -22.0 | -20.0 | -4.7 | 49 s |
| 17:45 | -20.8 | -20.4 | -4.1 | 42 s |
| 17:46 | -20.7 | -20.4 | -6.0 | 34 s |
| 17:47 | -21.1 | -19.3 | -4.3 | 53 s |
| 17:48 | -20.3 | -19.4 | -3.1 | 51 s |
| 17:49 | -22.5 | -20.3 | -3.7 | 50 s |
| 17:50 | -21.2 | -20.5 | -3.5 | 37 s |
| 17:51 | -23.0 | -19.5 | -4.4 | 58 s |
| 17:52 | -20.8 | -20.0 | -3.8 | 59 s |
| 17:53 | -20.8 | -19.6 | -3.6 | 53 s |
| 17:54 | — | -19.8 | -3.5 | 60 s |
| 17:55 | — | -19.3 | -4.1 | 60 s |
| 17:56 | -22.1 | -21.5 | -4.8 | 11 s |
| 17:57 | -22.7 | -21.2 | -4.3 | 31 s |
| 17:58 | -20.9 | -20.6 | -4.2 | 20 s |
| 17:59 | -22.0 | -20.9 | -4.4 | 38 s |
| 18:00 | -20.9 | -20.1 | -4.1 | 40 s |
| 18:01 | -20.6 | -19.8 | -4.1 | 28 s |
| 18:02 | — | -18.9 | -3.4 | 60 s |
| 18:03 | -20.7 | -20.2 | -3.4 | 32 s |
| 18:04 | -20.9 | -20.2 | -4.2 | 27 s |
| 18:05 | -23.3 | -21.7 | -3.5 | 48 s |
| 18:06 | — | -20.9 | -3.9 | 60 s |
| 18:07 | — | -19.9 | -4.2 | 60 s |
| 18:08 | -26.4 | -20.2 | -4.9 | 48 s |
| 18:09 | -33.0 | -18.9 | -3.7 | 59 s |
| 18:10 | — | -19.0 | -4.1 | 60 s |
| 18:11 | -22.1 | -19.2 | -3.6 | 55 s |
| 18:12 | -21.8 | -20.7 | -3.8 | 43 s |
| 18:13 | -22.8 | -20.7 | -5.0 | 43 s |
| 18:14 | -26.0 | -24.5 | -4.3 | 27 s |
| 18:15 | — | -19.7 | -4.2 | 60 s |
| 18:16 | — | -19.9 | -4.2 | 60 s |
| 18:17 | — | -18.7 | -3.2 | 60 s |
| 18:18 | -16.0 | -18.9 | -3.0 | 58 s |
| 18:19 | -30.3 | -23.6 | -3.9 | 40 s |
| 18:20 | -29.1 | -23.0 | -5.6 | 44 s |
| 18:21 | -29.7 | -24.9 | -5.0 | 33 s |
| 18:22 | -24.5 | -21.0 | -3.8 | 50 s |
| 18:23 | — | -20.2 | -4.9 | 60 s |
| 18:24 | -30.7 | -20.0 | -2.6 | 58 s |
| 18:25 | — | -19.5 | -3.6 | 60 s |
| 18:26 | -26.6 | -21.0 | -4.0 | 44 s |
| 18:27 | -30.6 | -21.3 | -3.1 | 58 s |
| 18:28 | — | -21.5 | -4.3 | 60 s |
| 18:29 | -29.3 | -25.2 | -4.3 | 31 s |
| 18:30 | -39.3 | -21.3 | -1.8 | 59 s |
| 18:31 | -47.3 | -21.4 | -4.2 | 57 s |
| 18:32 | — | -20.4 | -2.3 | 53 s |
What the number is. Decibels relative to full scale, where 0 is the loudest the camera can record. The X5 has no calibrated reference, so this is not the same scale as a sound meter. Compare moments within this walk to each other, not to a bylaw limit.
Voice. The person carrying the camera talks for much of the walk. Every second that the transcript marks as speech is flagged and left out of the street figures. Voices still leak into the seconds either side, so the street line is an upper bound on quiet, not an exact one.
Uncertainty. Mean level of all seconds is -21.0 dB with a standard error of 0.2 dB, computed over 77 one minute blocks because neighbouring seconds are not independent. For the street only seconds it is -22.7 dB, standard error 0.7 dB.
Source. Three proxy files the camera wrote beside the 360 footage, read with ffmpeg. One walk, one evening. The walk itself, second by second, is at the 22 September walk.